The 飞刀 is a unique 困难模式 近战武器 dropped by the 神圣宝箱怪. It throws a reusable cursor-controllable projectile similar to the 魔法导弹 mechanic, though more erratic and with no 魔力 cost. Like 回旋镖, the projectile returns to the player.
Holding the ⚒ 使用/攻击 button after use directs the projectile's general path, although it also continually moves on its own and ricochets off 物块s. As such, it may require a little practice to be used properly. It returns to the player when the ⚒ 使用/攻击 button is released, or after one minute of continuous use. Being a melee weapon, it costs no mana or 弹药. The Flying Knife also emits a good deal of light during use, but it may be difficult to use considering its erratic movement. Like most piercing weapons, it is very effective against enemies with multiple segments.
Its best 修饰语 is 恶魔. Though the Flying Knife can obtain the 神级 prefix, the added 击退 is not beneficial and makes it tricky to damage the same targets. Furthermore, the knife will not necessarily be knocking enemies away from you. Alternatively, prefixes that reduce knockback (the best being 无情) can be beneficial, reducing the distance enemies are knocked away from your cursor.